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Copyright (c) 2020 Eko Afrianto
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
ISSN: 2620-5904
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Eko Afrianto
Universitas Andalas
Indonesia
Yaswirman Yaswirman
Universitas Andalas
Indonesia
Neneng Oktarina
Universitas Andalas
Indonesia
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ISSN: 2620-5904
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